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Rel. frost
Last spring frost (0°C) 10 Mar Frost 9 of 10 years · 20 years of data
Frost-free season 231 days 10 Mar – 27 Oct
Probability that frost is over

10% = Half of years are frost-free by this date. More about frost & season →

Custom date

Vegetables

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Cauliflower
Brassica oleracea (Botrytis-gruppen)
20 Jan – 3 Feb
22 Jun
5-7 wk
10 Mar
27 Jul
0 wk
4 Mar
17 Jul
1 wk before
Broccoli
Brassica oleracea (Italica-gruppen)
27 Jan – 10 Feb
4 Jul
4-6 wk
10 Mar
1 Aug
0 wk
4 Mar
22 Jul
1 wk before
Chili pepper
Capsicum annuum
Greenhouse
9 Jan – 6 Feb
6 Apr
8-12 wk
3 Apr
1 Jun
3 wk after
Curly Kale
Brassica oleracea (Curly Kale-gruppen)
20 Jan – 3 Feb
17 Jun
5-7 wk
10 Mar
22 Jul
0 wk
25 Feb
12 Jul
2 wk before
Garden cucumber
Cucumis sativus
Fleece
20 – 27 Mar
31 May
3-4 wk
17 Apr
21 Jun
5 wk after
Florence Fennel
Foeniculum vulgare
25 Mar – 1 Apr
14 Jun
4-5 wk
29 Apr
12 Jul
7 wk after
20 Apr
2 Jul
6 wk after
Butter bean
Phaseolus lunatus
Greenhouse
11 – 18 Apr
12 May
3-4 wk
9 May
2 Jun
9 wk after
Onion
Allium cepa (Cepa-gruppen)
16 Dec – 13 Jan
7 Apr
8-12 wk
10 Mar
2 Jun
0 wk
23 Mar
23 May
2 wk after
Onion (sets)
Allium cepa (Cepa-gruppen)
4 Mar
22 Jun
1 wk before
4 Mar
12 Jun
1 wk before
Maize
Zea mays
Fleece
6 – 13 Mar
21 May
3-4 wk
3 Apr
11 Jun
3 wk after
Swiss Chard
Beta vulgaris (Flavescens-gruppen)
12 – 19 Feb
11 Jul
3-4 wk
12 Mar
1 Aug
0 wk
23 Mar
22 Jul
2 wk after
Carrot
Daucus carota subsp. sativus var. sativus
10 Mar
12 Jul
0 wk
25 Feb
2 Jul
2 wk before
Palm Kale
Brassica oleracea (Palm Kale-gruppen)
20 Jan – 3 Feb
17 Jun
5-7 wk
10 Mar
22 Jul
0 wk
25 Feb
12 Jul
2 wk before
Potato
Solanum tuberosum
1 – 15 Feb
14 Jun
4-6 wk
15 Mar
12 Jul
1 wk after
15 Mar
2 Jul
1 wk after
Ornamental Kale
Brassica oleracea (Ornamental-gruppen)
20 Jan – 3 Feb
27 Jun
5-7 wk
10 Mar
1 Aug
0 wk
4 Mar
22 Jul
1 wk before
Pumpkin
Cucurbita pepo
1 – 8 Apr
5 Jun
3-4 wk
29 Apr
26 Jun
7 wk after
Beetroot
Beta vulgaris (Conditiva-gruppen)
12 – 19 Feb
27 Jun
3-4 wk
12 Mar
18 Jul
0 wk
23 Mar
8 Jul
2 wk after
Red Cabbage
Brassica oleracea (Red Cabbage-gruppen)
27 Jan – 10 Feb
29 Jun
4-6 wk
10 Mar
27 Jul
0 wk
Lettuce
Lactuca sativa
10 – 17 Feb
16 Jul
3-4 wk
10 Mar
6 Aug
0 wk
4 Mar
27 Jul
1 wk before
Savoy Cabbage
Brassica oleracea (Savoy Cabbage-gruppen)
27 Jan – 10 Feb
29 Jun
4-6 wk
10 Mar
27 Jul
0 wk
Shallot (bulbs)
Allium cepa (Aggregatum-gruppen)
28 Jan – 11 Feb
8 Jun
2-4 wk
25 Feb
22 Jun
2 wk before
25 Feb
12 Jun
2 wk before
Shallot (sets)
Allium cepa (Aggregatum-gruppen)
4 Mar
22 Jun
1 wk before
4 Mar
12 Jun
1 wk before
Spinach
Spinacia oleracea
10 – 17 Feb
31 Jul
3-4 wk
10 Mar
21 Aug
0 wk
18 Feb
11 Aug
3 wk before
Sweet potato
Ipomoea batatas
11 – 25 Apr
4-6 wk
23 May
11 wk after
Garden tomato
Solanum lycopersicum
Fleece
6 – 20 Feb
30 Apr
6-8 wk
3 Apr
11 Jun
3 wk after
Tomatillo
Physalis ixocarpa
Common Bean
Phaseolus vulgaris
20 Mar – 3 Apr
7 Jun
2-4 wk
17 Apr
21 Jun
5 wk after
20 Apr
11 Jun
6 wk after
White Cabbage
Brassica oleracea (White Cabbage-gruppen)
27 Jan – 10 Feb
29 Jun
4-6 wk
10 Mar
27 Jul
0 wk
Garden pea
Pisum sativum
10 – 17 Feb
1 Jul
3-4 wk
10 Mar
22 Jul
0 wk
4 Mar
12 Jul
1 wk before

Herbs

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Basil
Ocimum basilicum
18 Mar – 1 Apr
14 May
4-6 wk
29 Apr
11 Jun
7 wk after
Lemon balm
Melissa officinalis
30 Dec – 13 Jan
27 May
8-10 wk
10 Mar
22 Jul
0 wk
5 Apr
12 Jul
4 wk after
Dill
Anethum graveolens
4 Mar
1 Aug
1 wk before
Wild chives
Allium schoenoprasum
Season too short
13 – 27 Jan
10 Jun
6-8 wk
10 Mar
22 Jul
0 wk
4 Feb
12 Jul
5 wk before
Spearmint
Mentha spicata
16 Dec – 13 Jan
27 May
8-12 wk
10 Mar
22 Jul
0 wk
5 Apr
12 Jul
4 wk after
Coriander
Coriandrum sativum
10 Mar
21 Aug
0 wk
23 Mar
11 Aug
2 wk after
Garden sage
Salvia officinalis
1 – 15 Jan
12 May
8-10 wk
12 Mar
7 Jul
0 wk
Common thyme
Thymus vulgaris
30 Dec – 13 Jan
17 May
8-10 wk
10 Mar
12 Jul
0 wk
Oregano
Origanum vulgare
13 – 27 Jan
31 May
6-8 wk
10 Mar
12 Jul
0 wk
5 Apr
2 Jul
4 wk after
Parsley
Petroselinum crispum
13 – 27 Jan
31 May
6-8 wk
10 Mar
12 Jul
0 wk
4 Mar
2 Jul
1 wk before
Rosemary
Salvia rosmarinus
4 Dec – 1 Jan
13 Apr
10-14 wk
12 Mar
22 Jun
0 wk

Annual flowers

Plant Sow indoors Transplant Direct sow
Earliest Latest Growing time Earliest Latest Rel. frost Earliest Latest Rel. frost
Morning glory
Ipomoea tricolor
1 – 8 Apr
21 May
3-4 wk
29 Apr
11 Jun
7 wk after
Cornflower
Centaurea cyanus
10 Mar
22 Jul
0 wk
4 Mar
12 Jul
1 wk before
Statice
Limonium sinuatum
6 – 20 Feb
30 Apr
8-10 wk
17 Apr
25 Jun
5 wk after
Sweet William
Dianthus barbatus
13 – 27 Jan
6-8 wk
10 Mar
0 wk
15 Mar
1 wk after
Snow-on-the-mountain
Euphorbia marginata
20 Feb – 6 Mar
14 May
6-8 wk
17 Apr
25 Jun
5 wk after
23 May
15 Jun
11 wk after
Pinnate dahlia
Dahlia × pinnata
13 – 27 Feb
25 May
6-8 wk
10 Apr
6 Jul
4 wk after
Pinnate dahlia (tubers)
Dahlia × pinnata
8 Feb – 8 Mar
8 Jun
4-8 wk
5 Apr
6 Jul
4 wk after
5 Apr
26 Jun
4 wk after
Foxglove
Digitalis purpurea
30 Dec – 13 Jan
8-10 wk
10 Mar
0 wk
23 Mar
2 wk after
Busy lizzie
Impatiens walleriana
4 Feb – 4 Mar
12 Jun
8-12 wk
29 Apr
7 Aug
7 wk after
Creeping zinnia
Sanvitalia procumbens
20 Feb – 6 Mar
24 May
6-8 wk
17 Apr
5 Jul
5 wk after
Hyacinth bean
Dolichos lablab
Fleece
18 Mar – 1 Apr
14 Apr
4-6 wk
29 Apr
12 May
7 wk after
Chinese lantern
Physalis alkekengi
1 – 15 Jan
27 Apr
8-10 wk
12 Mar
22 Jun
0 wk
Love in a mist
Nigella damascena
10 Mar
7 Jul
0 wk
4 Mar
27 Jun
1 wk before
Strawflower
Xerochrysum bracteatum
20 Feb – 6 Mar
4 May
6-8 wk
17 Apr
15 Jun
5 wk after
23 May
5 Jun
11 wk after
Purple-top vervain
Verbena bonariensis
18 Dec – 15 Jan
27 Apr
8-12 wk
12 Mar
22 Jun
0 wk
Cardoon
Cynara cardunculus
23 Jan – 20 Feb
28 Mar
8-12 wk
17 Apr
23 May
5 wk after
Regal-foxtail
Ptilotus nobilis
4 Feb – 4 Mar
6 Apr
8-12 wk
29 Apr
1 Jun
7 wk after
Globe amaranth
Gomphrena globosa
4 – 18 Mar
20 Apr
6-8 wk
29 Apr
1 Jun
7 wk after
Corn poppy
Papaver rhoeas
10 Mar
22 Jul
0 wk
4 Mar
12 Jul
1 wk before
Snapdragon
Antirrhinum majus
16 Dec – 13 Jan
17 May
8-12 wk
10 Mar
12 Jul
0 wk
15 Mar
2 Jul
1 wk after
Flossflower
Ageratum houstonianum
18 Feb – 4 Mar
10 May
8-10 wk
29 Apr
5 Jul
7 wk after
Sweet pea
Lathyrus odoratus
13 Jan – 3 Feb
7 Jun
5-8 wk
10 Mar
12 Jul
0 wk
Stock
Matthiola incana
13 – 27 Jan
10 Jun
6-8 wk
10 Mar
22 Jul
0 wk
23 Mar
12 Jul
2 wk after
Wormwood
Artemisia absinthium
13 – 27 Jan
11 May
6-8 wk
10 Mar
22 Jun
0 wk
23 Mar
12 Jun
2 wk after
Mexican sunflower
Tithonia rotundifolia
18 Mar – 1 Apr
29 Apr
4-6 wk
29 Apr
27 May
7 wk after
Garden pansy
Viola × wittrockiana
30 Dec – 13 Jan
27 May
8-10 wk
10 Mar
22 Jul
0 wk
15 Mar
12 Jul
1 wk after
Petunia
Petunia
23 Jan – 20 Feb
30 Apr
8-12 wk
17 Apr
25 Jun
5 wk after
Sweet Scabious
Scabiosa atropurpurea
15 – 29 Jan
11 May
6-8 wk
12 Mar
22 Jun
0 wk
20 Apr
12 Jun
6 wk after
Common zinnia
Zinnia elegans
6 – 20 Mar
25 May
4-6 wk
17 Apr
22 Jun
5 wk after
Common morning glory
Ipomoea purpurea
25 Mar – 8 Apr
21 May
3-5 wk
29 Apr
11 Jun
7 wk after
Garden cosmos
Cosmos bipinnatus
6 – 20 Mar
8 Jun
4-6 wk
17 Apr
6 Jul
5 wk after
20 Apr
26 Jun
6 wk after
Scarlet milkweed
Asclepias curassavica
24 Feb – 24 Mar
6 May
8-12 wk
19 May
1 Jul
10 wk after
Bee balm
Monarda didyma
16 Dec – 13 Jan
27 Apr
8-12 wk
10 Mar
22 Jun
0 wk
5 Apr
12 Jun
4 wk after
Yarrow
Achillea millefolium
13 – 27 Jan
11 Apr
6-8 wk
10 Mar
23 May
0 wk
23 Mar
13 May
2 wk after
Safflower
Carthamus tinctorius
10 Mar
22 Jun
0 wk
4 Mar
12 Jun
1 wk before
Iceland poppy
Papaver nudicaule
Season too short
13 – 27 Jan
31 May
6-8 wk
10 Mar
12 Jul
0 wk
23 Jan
2 Jul
7 wk before
Bishop's flower
Ammi majus
27 Jan – 10 Feb
14 Jun
4-6 wk
10 Mar
12 Jul
0 wk
23 Mar
2 Jul
2 wk after
Drumsticks
Pycnosorus globosus
4 – 18 Feb
14 Mar
10-12 wk
29 Apr
23 May
7 wk after
Sunflower
Helianthus annuus
20 – 27 Mar
21 Jun
3-4 wk
17 Apr
12 Jul
5 wk after
5 Apr
2 Jul
4 wk after
China aster
Callistephus chinensis
20 Feb – 6 Mar
10 Jun
6-8 wk
17 Apr
22 Jul
5 wk after
20 Apr
12 Jul
6 wk after
Annual phlox
Phlox drummondii
6 – 20 Feb
24 May
6-8 wk
3 Apr
5 Jul
3 wk after
20 Apr
25 Jun
6 wk after
Hollyhock
Alcea rosea
13 – 27 Jan
6-8 wk
10 Mar
0 wk
23 Mar
2 wk after
Alpine delphinium
Delphinium elatum
16 Dec – 13 Jan
27 Apr
8-12 wk
10 Mar
22 Jun
0 wk
5 Apr
12 Jun
4 wk after
African marigold
Tagetes erecta
20 Feb – 6 Mar
24 May
6-8 wk
17 Apr
5 Jul
5 wk after
Black-eyed Susan
Rudbeckia hirta
15 – 29 Jan
31 May
6-8 wk
12 Mar
12 Jul
0 wk
20 Apr
2 Jul
6 wk after
Wood sage
Salvia nemorosa
30 Dec – 13 Jan
17 Apr
8-10 wk
10 Mar
12 Jun
0 wk
5 Apr
2 Jun
4 wk after
Black-eyed susan vine
Thunbergia alata
18 Feb – 18 Mar
30 Apr
6-10 wk
29 Apr
11 Jun
7 wk after
California goldenpoppy
Eschscholzia californica
10 Mar
22 Jul
0 wk
4 Mar
12 Jul
1 wk before
Painted tongue
Salpiglossis sinuata
6 – 20 Feb
17 May
8-10 wk
17 Apr
12 Jul
5 wk after
Water forget-me-not
Myosotis scorpioides
Season too short
13 – 27 Jan
11 May
6-8 wk
10 Mar
22 Jun
0 wk
25 Feb
12 Jun
2 wk before